<template>
  <div class="List">
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/welcome' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input
            placeholder="请输入内容"
            v-model="queryInfo.query"
            clearable
            @clear="searchGoodList"
          >
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="searchGoodList"
            ></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button
            type="primary"
            @click="goAddPage"
            >添加商品</el-button
          >
        </el-col>
      </el-row>
      <!-- 表格区域 -->
      <el-table :data="goodsList" border stripe>
        <el-table-column type="index"> </el-table-column>
        <el-table-column prop="goods_name" label="商品名称"> </el-table-column>
        <el-table-column prop="goods_price" label="价格(元)" width="95px">
        </el-table-column>
        <el-table-column prop="goods_weight" label="商品重量" width="80px">
        </el-table-column>
        <el-table-column prop="add_time" label="创建时间" width="150px">
          <template slot-scope="scope">
            {{ scope.row.add_time | dateFormat }}
          </template>
        </el-table-column>
        <el-table-column label="操作" width="130px">
          <template slot-scope="scope">
            <el-button
              type="primary"
              class="el-icon-edit"
              size="mini"
            ></el-button>
            <el-button
              type="danger"
              class="el-icon-delete"
              size="mini"
              @click="removeGood(scope.row.goods_id)"
            ></el-button>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[5, 10, 15, 20]"
        :page-size="queryInfo.pagensize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
        background
      >
      </el-pagination>
    </el-card>
  </div>
</template>

<script>
export default {
  name: "List",
  data() {
    return {
      queryInfo: {
        query: "",
        pagenum: 1,
        pagesize: 10,
      },
      total: 0,
      goodsList: [],
    };
  },
  methods: {
    async getGoodList() {
      const { data: res } = await this.$http.get("goods", {
        params: this.queryInfo,
      });
      if (res.meta.status !== 200)
        return this.$message.error("获取商品列表失败！");
      this.goodsList = res.data.goods;
      this.total = res.data.total;
        // console.log(res);
    },
    handleSizeChange(newSize) {
      console.log(newSize);
      this.queryInfo.pagesize = newSize;
      this.getGoodList();
    },
    handleCurrentChange(newPage) {
      console.log(newPage);
      this.queryInfo.pagenum = newPage;
      this.getGoodList();
    },
    removeGood(id) {
      this.$confirm("此操作将永久删除该商品, 是否继续?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning",
      })
        .then(async () => {
          const { data: res } = await this.$http.delete(`goods/${id}`);
          if (res.meta.status !== 200) return this.$error("删除分类失败！");
          const beforePage = Math.ceil(this.total / this.queryInfo.pagesize);
          const afterPage = Math.ceil(
            (this.total - 1) / this.queryInfo.pagesize
          );
          if (
            this.queryInfo.pagenum - 1 == afterPage &&
            this.queryInfo.pagenum === beforePage
          ) {
            this.queryInfo.pagenum--;
          }
          this.getGoodList();
          this.$message.success("删除成功!");
        })
        .catch(() => {
          this.$message.info("已取消删除");
        });
    },
    searchGoodList(){
      this.queryInfo.pagenum = 1;
      this.getGoodList();
    },
    goAddPage(){
        this.$router.push('/goods_add');
    }
  },
  created() {
    this.getGoodList();
  },
};
</script>

<style>
</style>